This receiver for infrared remote control was found in the Philips Databook of 1990, The circuit operates with 5 V and is intended for receiving data.
The simple mixer presented can be used to mix the signals from low intensity sources, applying them to...
This circuit cuts out ads between songs, based on the fact that the speech signal has small...
This small unregulated variable power supply was found in an American book from the 60's. The...